JPH065806U - Indexable cutting tool - Google Patents
Indexable cutting toolInfo
- Publication number
- JPH065806U JPH065806U JP4299092U JP4299092U JPH065806U JP H065806 U JPH065806 U JP H065806U JP 4299092 U JP4299092 U JP 4299092U JP 4299092 U JP4299092 U JP 4299092U JP H065806 U JPH065806 U JP H065806U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- chip
- lever member
- throw
- cutting tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
(57)【要約】
【目的】 厚さの異なるチップに対応でき、着脱作業が
容易で構成部品数を減らすことのできるスローアウェイ
式切削工具を得る。
【構成】 工具本体３４のチップ着座部に、チップ３２
の側面に当接して位置決め面とされる側壁５０を形成
し、このチップ着座部の下方に側面視略Ｌ字状をなすレ
バー部材４４を、その一端部６２をチップ３２の貫通孔
３０を挿通させ、その他端部６４をクランプねじ４１の
縮径部５８に係合させ、その角部６６を摩擦面４２ａに
当接する状態で配設する。レバー部材４４の一端部６２
の先端部は、他端部６４側に向けて屈曲させ、チップ３
２に係合する係合部となす。また、レバー部材４４の下
方には、該レバー部材４４の角部６６を上方に向けて付
勢するばね４６を設ける。
(57) [Summary] [Purpose] To obtain a throw-away type cutting tool that can accommodate chips with different thicknesses, can be easily attached and detached, and can reduce the number of components. [Structure] The tip 32 is attached to the tip seating portion of the tool body 34.
A side wall 50 which is in contact with the side surface of the chip and serves as a positioning surface. Then, the other end portion 64 is engaged with the reduced diameter portion 58 of the clamp screw 41, and the corner portion 66 thereof is disposed in contact with the friction surface 42a. One end 62 of the lever member 44
The tip of the tip is bent toward the other end 64 side, and the tip 3
The engaging portion engages with 2. Further, below the lever member 44, a spring 46 for urging the corner portion 66 of the lever member 44 upward is provided.
Description
【０００１】[0001]
この考案はバイトやボーリングバー等、厚さ方向に延びる貫通孔が形成された スローアウェイチップ（以下、「チップ」と略称する。）がチップ着座部に装着 固定されてなるスローアウェイ式切削工具の、チップ装着構造の改良に関する。 This invention is a throw-away type cutting tool in which a throw-away tip (hereinafter abbreviated as "tip") having a through hole extending in the thickness direction, such as a bite or boring bar, is attached and fixed to a tip seating portion. , Improvement of chip mounting structure.
【０００２】[0002]
図１０は、実開平２−５１００６号公報に示されたこの種のスローアウェイ式 切削工具の、従来のチップ装着構造の一例を示すものである。このスローアウェ イ式切削工具（バイト）のクランプホルダー（工具本体）２の一端に切欠的に設 けられたチップ座４内には、シート部材１０を介して、貫通孔６を有するチップ ８が装着されており、チップ座４の下方には、Ｌ字状のピン部材１２が、その一 端部１２ａをチップ１０の貫通孔６に挿通された状態で配置されている。 FIG. 10 shows an example of a conventional tip mounting structure of the throw-away type cutting tool of this type shown in Japanese Utility Model Laid-Open No. 2-51006. A chip 8 having a through hole 6 is mounted via a sheet member 10 in a chip seat 4 that is cut out at one end of a clamp holder (tool body) 2 of the throwaway cutting tool (bite). Below the tip seat 4, an L-shaped pin member 12 is arranged with its one end 12a inserted into the through hole 6 of the tip 10.
【０００３】 また、ホルダー２に形成された取付穴１４には、切欠１６が一部に形成された スリーブ１８、バネ２０及びこれらの中心側に挿通された締付ねじ２２が設けら れ、また締付ねじ２２とホルダー２との間に、締付ねじ２２によって締め付けら れるクランプ駒２４が配置されている。Further, the mounting hole 14 formed in the holder 2 is provided with a sleeve 18 having a notch 16 partially formed therein, a spring 20, and a tightening screw 22 inserted through the center of the spring 18. A clamp piece 24 to be tightened by the tightening screw 22 is arranged between the tightening screw 22 and the holder 2.
【０００４】 そして、締付ねじ２２を締め付けることによりスリーブ１８の切欠１６でピン 部材１２の他端部１２ｂを押し下げて、その一端部１２ａによりチップ８を側方 に押圧する一方、クランプ駒２４によりチップ８の上面をチップ座４側に押圧し 、これによりチップ８をホルダー２に対して固定するようになっている。Then, the other end 12 b of the pin member 12 is pushed down by the notch 16 of the sleeve 18 by tightening the tightening screw 22, and the tip 8 is laterally pressed by the one end 12 a, while the clamp piece 24 is used. The upper surface of the chip 8 is pressed against the chip seat 4 side, whereby the chip 8 is fixed to the holder 2.
【０００５】 ところで、上記のような従来のスローアウェイ式切削工具にあっては、ホルダ ー２に装着できるチップ８の厚さが決まっており、厚さの異なるチップを同一の ホルダー２に装着して用いることが難しく、チップの厚さの変化に対応すること のできるチップ装着構造が求められていた。また、上記のようなスローアウェイ 式切削工具ではクランプ駒２４やスリーブ１８等、部品点数が多いため、これを できるだけ少なくしたいという要求もあった。 本考案は、上記のような課題を解決することを目的とするものである。By the way, in the conventional throw-away type cutting tool as described above, the thickness of the tip 8 that can be attached to the holder 2 is fixed, and tips having different thicknesses are attached to the same holder 2. It was difficult to use as a chip, and there was a need for a chip mounting structure that can cope with changes in chip thickness. Further, in the above-mentioned throw-away type cutting tool, since the number of parts such as the clamp piece 24 and the sleeve 18 is large, there has been a demand to reduce the number as much as possible. The present invention is intended to solve the above problems.
【０００６】[0006]
本考案は、工具本体に設けられたチップ着座部に、厚さ方向に延びる貫通孔が 形成されたチップが、前記厚さ方向を前記チップ着座部の法線方向と平行にする 状態で装着固定されてなるスローアウェイ式切削工具において、前記工具本体の 前記チップ着座部に形成した側壁を前記チップの側面の当接する位置決め面とな し、側面視略Ｌ字状をなすレバー部材の一端部の先端部を、他端部側に向けて屈 曲する係合部となし、このレバー部材を前記工具本体の前記チップ着座部の下方 に、その前記一端部を前記チップの前記貫通孔に挿通させて前記係合部を該チッ プに係合させ、その前記他端部を前記側壁側を指向させるとともに、その角部の 一部が前記工具本体に形成された摩擦面に当接する状態で配設し、このレバー部 材の下部に、該レバー部材の前記角部近傍を略前記法線方向に付勢する弾性部材 を設け、さらに、前記工具本体に前記レバー部材の前記他端部を略前記法線方向 に向けて押圧する押圧部材を設けたことを特徴とするものである。 According to the present invention, a chip having a through hole extending in a thickness direction is formed in a chip seating portion provided on a tool body, and the chip is mounted and fixed in a state where the thickness direction is parallel to a normal direction of the chip seating portion. In the throw-away type cutting tool configured as described above, the side wall formed in the tip seating portion of the tool body serves as a positioning surface with which the side surface of the tip comes into contact, and one end portion of the lever member that is substantially L-shaped in side view is provided. The tip portion is an engaging portion that bends toward the other end side, and this lever member is inserted below the tip seating portion of the tool body, and the one end thereof is inserted into the through hole of the tip. The engaging portion with the chip, the other end of the engaging portion is directed toward the side wall, and the corner portion of the engaging portion is arranged in contact with the friction surface formed on the tool body. Installed on the lower part of the lever An elastic member for urging the bar member in the vicinity of the corner portion in the substantially normal direction is provided, and a pressing member for pressing the other end of the lever member in the tool body in the substantially normal direction is provided. It is characterized by being provided.
【０００７】 また、前記摩擦面を、前記法線方向内側に向かうにつれて漸次前記側壁側に傾 斜する傾斜面に形成する構成としてもよい。Further, the friction surface may be formed as an inclined surface that gradually inclines toward the side wall as it goes inward in the normal direction.
【０００８】[0008]
上記構成に係るスローアウェイ式切削工具にあっては、チップをチップ着座部 に装着した状態において、押圧部材によりレバー部材の他端部を押圧してゆくと 、レバー部材は角部を支点として側壁側に回動し、その一端部に形成された係合 部により、チップを厚さ方向及び厚さ方向と直交する方向（又は両方向の合力方 向）に押圧し、固定する。従って、チップ固定作業が押圧部材の押込操作のみに よって行われる。チップ着座部に異なる厚さのチップを装着した場合、レバー部 材の下部に配設された弾性部材によりチップの厚さの変動が吸収され、レバー部 材の係合部はチップに対して同じ位置に係合せしめられる。 In the throw-away cutting tool having the above structure, when the tip of the lever member is pushed by the pushing member while the tip is mounted on the tip seating portion, the lever member causes the side wall with the corner portion as the fulcrum. The chip is pivoted to the side, and an engaging portion formed at one end thereof presses and fixes the chip in the thickness direction and the direction orthogonal to the thickness direction (or the resultant direction of both directions). Therefore, the chip fixing operation is performed only by the pushing operation of the pressing member. When the chips with different thickness are mounted on the chip seating part, the variation of the chip thickness is absorbed by the elastic member disposed under the lever part material, and the engaging part of the lever part material is the same as the chip. The position is engaged.
【０００９】 摩擦面をチップ着座部の法線方向内側に向かうにつれて漸次側壁側に傾斜する 傾斜面に形成した場合、該摩擦面を前記法線方向に沿って形成する場合に比べて 、レバー部材が角部を支点として回動する範囲が大きくなり、チップの着脱作業 が容易となる。When the friction surface is formed as an inclined surface that gradually inclines toward the side wall side toward the inner side in the normal direction of the chip seating portion, compared with the case where the friction surface is formed along the normal direction, the lever member is formed. The range of rotation around the corners as a fulcrum becomes large, which facilitates the attachment / detachment work of the chip.
【００１０】[0010]
以下、添付図面を参照して本考案の実施例を説明する。 図１乃至図５は本考案の一実施例に係るスローアウェイ式切削工具（スローア ウェイ式バイト）を示すものである。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 5 show a throw-away type cutting tool (throw-away type cutting tool) according to an embodiment of the present invention.
【００１１】 これらの図に示すスローアウェイ式切削工具は、中央に厚さ方向に延びる貫通 孔（凹部）３０が形成された、ひし形平板状のチップ３２を切刃として用いるも のである。The throw-away type cutting tool shown in these figures uses a diamond-shaped flat tip 32 having a through hole (recess) 30 extending in the thickness direction at the center as a cutting blade.
【００１２】 本スローアウェイ式切削工具の概略構成について説明すると、工具本体３４の 先端部の角部にはチップ座３６が形成されており、このチップ座３６上に、シー ト部材３８を介して前記チップ３２が装着されている。また、工具本体３４の先 端部上面３４ａにほぼ垂直にねじ穴４０が穿設され、このねじ穴４０中にクラン プねじ（押圧部材に相当）４１が螺合せしめられる一方、チップ座３６の下方に は、前記ねじ穴４０とほぼ平行に延び且つねじ穴４０の一部に連通する空間４２ が形成されている。そして、この空間４２内には、側面視略Ｌ字状をなすレバー 部材４４がスプリング（弾性部材に相当）４６とともに配置されている。以下に 、各構成要素について詳述する。Explaining the schematic configuration of the present throw-away cutting tool, a tip seat 36 is formed at the corner of the tip of the tool body 34, and a seat member 38 is provided on the tip seat 36. The chip 32 is attached. Further, a screw hole 40 is bored almost vertically in the tip end upper surface 34a of the tool body 34, and a clamp screw (corresponding to a pressing member) 41 is screwed into the screw hole 40, while the tip seat 36 of the tip seat 36 is screwed. A space 42 is formed below and extends substantially parallel to the screw hole 40 and communicates with a part of the screw hole 40. In this space 42, a lever member 44 having a substantially L-shape in side view is arranged together with a spring (corresponding to an elastic member) 46. The respective constituent elements will be described in detail below.
【００１３】 前記チップ座３６は、平滑面とされた座面４８と、この座面４８の法線方向に 延びる側壁５０とから構成されており、側壁５０は、チップ３２の側面（２側面 ）に隙間なく当接して該チップ３２の座面４８に平行な方向の位置（刃先位置） を正確に定める位置決め面とされている。The chip seat 36 is composed of a smooth seat surface 48 and a side wall 50 extending in the normal direction of the seat surface 48. The side wall 50 is a side surface (two side surfaces) of the chip 32. Is a positioning surface that accurately abuts the tip 32 in a direction parallel to the seat surface 48 (blade position).
【００１４】 前記シート部材３８は、平面視においてチップ３２と同一形状に形成され、そ の厚さは全体に渡って均一とされている。また、このシート部材３８の中央部に は、チップ３２の貫通孔３０より大径の貫通孔３８ａが厚さ方向に形成されてお り、この貫通孔３８ａに略半円筒状のバネブッシュ５２がはめ込まれて、シート 部材３８が工具本体３４に固定されている。本実施例においては、チップ座３６ 上にシート部材３８が載置された状態において、チップ３２を着座するためのチ ップ着座部が形成されるが、必ずしもシート部材を用いた構成とする必要はない 。なお、本明細書において、チップ着座部にチップを装着した状態における該チ ップの厚さ方向と平行となる方向を、チップ着座部の法線方向と定義する。本実 施例の場合、座面４８の法線方向がチップ着座部の法線方向となる。The sheet member 38 is formed in the same shape as the chip 32 in a plan view, and its thickness is uniform over the whole. Further, a through hole 38a having a diameter larger than that of the through hole 30 of the chip 32 is formed in the central portion of the sheet member 38 in the thickness direction, and a substantially semi-cylindrical spring bush 52 is formed in the through hole 38a. The sheet member 38 is fitted and fixed to the tool body 34. In the present embodiment, the chip seating portion for seating the chip 32 is formed in the state where the seat member 38 is placed on the chip seat 36, but it is not always necessary to use the seat member. Not. In this specification, the direction parallel to the thickness direction of the chip with the chip mounted on the chip seating portion is defined as the normal line direction of the chip seating portion. In the case of the present embodiment, the normal line direction of the seat surface 48 is the normal line direction of the chip seating portion.
【００１５】 前記クランプねじ４１は、略円柱状をなし、その先端側外周部にねじ部５６が 形成され、また、その中央部には縮径部５８が形成されている。そして、そのね じ部５６をねじ穴４０に螺合させている。The clamp screw 41 has a substantially columnar shape, and a screw portion 56 is formed on the outer peripheral portion on the tip end side thereof, and a reduced diameter portion 58 is formed on the center portion thereof. Then, the screw portion 56 is screwed into the screw hole 40.
【００１６】 前記空間４２を画成する壁面の内、側壁５０に対向する側の部分は、前記レバ ー部材４４との間に所定の摩擦を作用せしめる摩擦面４２ａとされ、本実施例の 場合、ほぼチップ着座部の法線方向に平行に形成されている。また、空間４２の 下方には凹部６０が形成され、この凹部６０に前記ばね４６の一端側が固定され ている。Of the wall surfaces defining the space 42, a portion facing the side wall 50 is a friction surface 42 a for exerting a predetermined friction with the lever member 44, and in the case of the present embodiment. , Are formed substantially parallel to the normal line direction of the chip seating portion. A recess 60 is formed below the space 42, and one end of the spring 46 is fixed to the recess 60.
【００１７】 前記レバー部材４４は、前述のように側面視略Ｌ字状に形成されており、その 一端部６２には、その先端部を該レバー部材４４の他端部６４側にく字状に屈曲 させてなる係合部７２が形成されている。この係合部７２は、チップ３２の上面 を抑える平面部６８と、チップ３２の貫通孔３０の内壁部に当接する円筒部７０ とを備えている。レバー部材４４は、その一端部６２がシート部材３８の貫通孔 ３８ａを経てチップ３２の貫通孔３０内に挿通され、その他端部６４の先端部が 前記クランプねじ４１の縮径部５８に係合せしめられ、その角部６６の一部が前 記摩擦面４２ａに当接する状態で空間４２内に配設されている。そして、クラン プねじ４１の工具本体３４に対する上下移動により、角部６６の摩擦面４２ａと の当接部を支点として回動可能に、またレバー部材４４の角部６６の下面部分は 、前記ばね４６により上方（略チップ着座部の法線方向）に向けて付勢されてい る。As described above, the lever member 44 is formed in a substantially L shape in a side view, and one end portion 62 of the lever member 44 is shaped like a dogleg to the other end portion 64 side of the lever member 44. An engaging portion 72 is formed by bending it. The engaging portion 72 includes a flat surface portion 68 that suppresses the upper surface of the tip 32, and a cylindrical portion 70 that abuts on the inner wall portion of the through hole 30 of the tip 32. One end 62 of the lever member 44 is inserted into the through hole 30 of the chip 32 through the through hole 38a of the sheet member 38, and the tip end of the other end 64 is engaged with the reduced diameter portion 58 of the clamp screw 41. It is arranged in the space 42 in a state in which the corner portion 66 is abutted against the friction surface 42a. By vertically moving the clamp screw 41 with respect to the tool body 34, the clamp screw 41 can be rotated about the contact portion of the corner portion 66 with the friction surface 42a as a fulcrum, and the lower surface portion of the corner portion 66 of the lever member 44 is It is urged upward by 46 (generally in the normal direction of the chip seating portion).
【００１８】 上記構成に係るスローアウェイ式切削工具においては、まずクランプねじ４１ を緩めた状態において、チップ３２の貫通孔３０をレバー部材４４の一端部６２ に図２に示すように通し、レバー部材４４の係合部７２をチップ３２の上面から 突出させる。In the throw-away cutting tool having the above structure, first, with the clamp screw 41 being loosened, the through hole 30 of the tip 32 is passed through the one end 62 of the lever member 44 as shown in FIG. The engaging portion 72 of 44 is projected from the upper surface of the chip 32.
【００１９】 こうしてチップ３２をチップ着座部に載置した後、クランプねじ４１を漸次締 め付けてゆき、該クランプねじ４１を下方に移動させてゆく。すると、レバー部 材４４の端部６４がクランプねじ４１の縮径部５８により下方に押し下げられ、 摩擦面４２ａに当接する角部６６を支点としてレバー部材４４が側壁５０側に回 動し、係合部７２がチップ３２の上面と貫通孔３０との境界部分に係合する。After mounting the chip 32 on the chip seating portion in this manner, the clamp screw 41 is gradually tightened, and the clamp screw 41 is moved downward. Then, the end portion 64 of the lever member 44 is pushed down by the reduced diameter portion 58 of the clamp screw 41, and the lever member 44 rotates toward the side wall 50 side with the corner portion 66 abutting the friction surface 42a as a fulcrum. The joint portion 72 engages with the boundary portion between the upper surface of the chip 32 and the through hole 30.
【００２０】 続けてクランプねじ４１を締め付けてゆくと、平面部６８がチップ３２の上面 を下方（チップ着座部の法線方向）に向けて押圧してゆき、同時に円筒部７０が 貫通孔３０の内壁部を側壁５０側に押圧し、これによりチップ３２がチップ着座 部に対して位置決め固定される。When the clamp screw 41 is continuously tightened, the flat surface portion 68 pushes the upper surface of the chip 32 downward (in the normal direction of the chip seating portion), and at the same time, the cylindrical portion 70 of the through hole 30. The inner wall portion is pressed toward the side wall 50, whereby the tip 32 is positioned and fixed to the tip seating portion.
【００２１】 チップ３２をチップ着座部から取り外す場合には、クランプねじ４１を緩める ことにより、レバー部材４４が前述の固定時と逆方向に回動して係合部７２によ るチップ３２の固定が解除され、チップ３２が容易に取り外される。When removing the tip 32 from the tip seating portion, by loosening the clamp screw 41, the lever member 44 rotates in the opposite direction to the above-described fixing time, and the tip 32 is fixed by the engaging portion 72. Is released and the chip 32 is easily removed.
【００２２】 上記のようなスローアウェイ式切削工具によれば、クランプねじ４１を締め付 けるだけの一操作によりチップ３２を容易且つ迅速に装着することができる。According to the throw-away type cutting tool as described above, the tip 32 can be mounted easily and quickly by only one operation of tightening the clamp screw 41.
【００２３】 また、チップ３２をチップ着座部に対して押圧するクランプ駒等を要さず、部 品点数を減らすことができる。Further, it is possible to reduce the number of parts without a clamp piece or the like for pressing the chip 32 against the seating portion of the chip.
【００２４】 また、ばね４６によりレバー部材４４の上下動が可能であるため、厚さの異な るチップをチップ着座部に装着した場合でも、チップの厚さの変位分がばね４６ により吸収され、チップをチップ着座部に装着固定することが可能である。Further, since the lever member 44 can be moved up and down by the spring 46, even if chips having different thicknesses are mounted on the chip seating portion, the displacement of the chip thickness is absorbed by the spring 46, The chip can be mounted and fixed on the chip seating portion.
【００２５】 次に、図６乃至図９を参照して本発明の他の実施例を説明する。なお、前述の 図１乃至図５に示した実施例と同一の構成要素には同一符号を付し、その説明を 省略する。Next, another embodiment of the present invention will be described with reference to FIGS. 6 to 9. The same components as those of the embodiment shown in FIGS. 1 to 5 are designated by the same reference numerals, and the description thereof will be omitted.
【００２６】 本実施例は、前述の図１乃至図５に示す実施例と異なり、工具本体３４に形成 した摩擦面７４の形状を、チップ着座部の法線方向内側（着座部の内側に向かう 方向）に向かうにつれて、漸次側壁５０側に傾斜する傾斜面としたことを特徴と する。図９において、チップ着座部の法線と摩擦面７４とがなす角度θは、およ そ１５゜〜３０゜となっている。In the present embodiment, unlike the embodiment shown in FIGS. 1 to 5 described above, the shape of the friction surface 74 formed on the tool main body 34 is formed inside the tip seating portion in the normal direction (toward the inside of the seating portion). Direction), the side wall 50 is gradually inclined toward the side wall 50 side. In FIG. 9, the angle θ formed by the normal to the seating portion of the chip and the friction surface 74 is about 15 ° to 30 °.
【００２７】 このような構成とした場合、チップ３２のチップ着座部への着脱時、クランプ ねじ４１を緩めた状態において図９に示すようにレバー部材４４の回動範囲が大 きくなるため、チップ３２をレバー部材４４の一端部６２に通し易くなる。そし て、図８、図７に示すように漸次クランプねじ４１を締め付けてゆくことにより 、チップ３２の着脱作業を容易に行うことができる。With such a configuration, when the chip 32 is attached to or detached from the chip seating portion, the range of rotation of the lever member 44 becomes large as shown in FIG. 9 when the clamp screw 41 is loosened. It becomes easy to pass 32 through the one end portion 62 of the lever member 44. Then, by gradually tightening the clamp screw 41 as shown in FIGS. 8 and 7, the work of attaching and detaching the tip 32 can be easily performed.
【００２８】 なお、上記各実施例においてはスローアウェイ式切削工具の一例としてバイト を示したが、本考案はこれに限られるものではなく、例えばボーリングバー等、 厚さ方向に延びる凹部が形成されたチップをチップ着座部に装着して用いるスロ ーアウェイ式切削工具であればどのようなものであってもよい。In each of the above embodiments, the cutting tool is shown as an example of the throw-away type cutting tool, but the present invention is not limited to this, and for example, a boring bar or the like is formed with a recess extending in the thickness direction. Any insert is possible as long as it is a throw-away type cutting tool which is used by attaching the insert to the insert seat portion.
【００２９】[0029]
以上説明したように、この考案によれば、工具本体のチップ着座部に形成した 側壁をチップの側面の当接する位置決め面となし、側面視略Ｌ字状をなすレバー 部材の一端部の先端部を、他端部側に向けて屈曲する係合部となし、このレバー 部材を工具本体のチップ着座部の下方に、その一端部をチップの貫通孔に挿通さ せて前記係合部をチップに係合させ、その他端部を前記側壁側を指向させるとと もに、その角部の一部が工具本体に形成された摩擦面に当接する状態で配設し、 このレバー部材の下部に、該レバー部材の角部近傍を略チップ着座部の法線方向 に付勢する弾性部材を設け、さらに、工具本体にレバー部材の他端部を略前記法 線方向に向けて押圧する押圧部材を設ける構成としたので、チップをチップ着座 部に対して押圧するクランプ駒等を要さず、部品点数を減らすことができるとと もに、厚さの異なるチップをチップ着座部に装着することが可能となる。 As described above, according to this invention, the side wall formed on the tip seating portion of the tool body serves as a positioning surface for contacting the side surface of the tip, and the tip end portion of one end portion of the lever member that is substantially L-shaped in side view is provided. Is an engaging portion that bends toward the other end side, and this lever member is inserted below the tip seating portion of the tool body, and one end of the lever member is inserted into the through hole of the tip to form the engaging portion. And the other end is directed to the side wall side, and a part of the corner is placed in contact with the friction surface formed on the tool body. An elastic member for urging the vicinity of the corner of the lever member in the normal direction of the chip seating portion, and further a pressing member for pressing the other end of the lever member in the tool body in the substantially normal direction. Since the structure is provided, the chip is pressed against the chip seating part. That without requiring clamps piece like, the number of parts can be reduced and monitor, and a different chip thicknesses can be attached to the tip seat.
【００３０】 また、摩擦面を前記法線方向内側に向かうにつれて漸次側壁側に傾斜する傾斜 面に形成することにより、レバー部材が角部を支点として回動する範囲が大きく なり、チップの着脱作業を容易に行うことができる。Further, by forming the friction surface into an inclined surface that gradually inclines toward the side wall side as it goes inward in the normal direction, the range in which the lever member rotates about the corner as a fulcrum becomes large, and the work of attaching and detaching the chip is increased. Can be done easily.
【図１】図３のＡ−Ａ線断面図である。1 is a cross-sectional view taken along the line AA of FIG.
【図２】図３のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図４の要部拡大図である。FIG. 3 is an enlarged view of a main part of FIG.
【図４】本考案の一実施例に係るスローアウェイ式切削
工具を示す平面図である。FIG. 4 is a plan view showing a throw-away type cutting tool according to an embodiment of the present invention.
【図５】図４のスローアウェイ式切削工具の側面図であ
る。5 is a side view of the throw-away cutting tool of FIG. 4. FIG.
【図６】本考案の他の実施例に係るスローアウェイ式切
削工具の要部拡大図である。FIG. 6 is an enlarged view of a main part of a throw-away type cutting tool according to another embodiment of the present invention.
【図７】図６のＢ−Ｂ線断面図である。7 is a cross-sectional view taken along the line BB of FIG.
【図８】図６のＢ−Ｂ線断面図である。8 is a cross-sectional view taken along the line BB of FIG.
【図９】図６のＢ−Ｂ線断面図である。9 is a cross-sectional view taken along the line BB of FIG.
【図１０】従来のスローアウェイ式切削工具の一例を示
す側断面図である。FIG. 10 is a side sectional view showing an example of a conventional indexable cutting tool.
３０ 貫通孔（チップ） ３２ チップ ３４ 工具本体 ４１ 押圧部材 ４２ａ 摩擦面 ４４ レバー部材 ４６ 弾性部材 ５０ 側壁 ６２ レバー部材の一端部 ６４ レバー部材の他端部 ６６ レバー部材の角部 ７２ レバー部材の係合部 ７８ 摩擦面 30 Through Hole (Chip) 32 Chip 34 Tool Body 41 Pressing Member 42a Friction Surface 44 Lever Member 46 Elastic Member 50 Side Wall 62 One End of Lever Member 64 Other End of Lever Member 66 Corner of Lever Member 72 Engagement of Lever Member Part 78 Friction surface
Claims (2)
さ方向に延びる貫通孔が形成されたスローアウェイチッ
プが、前記厚さ方向を前記チップ着座部の法線方向と平
行にする状態で装着固定されてなるスローアウェイ式切
削工具において、 前記工具本体の前記チップ着座部に形成した側壁を前記
スローアウェイチップの側面の当接する位置決め面とな
し、 側面視略Ｌ字状をなすレバー部材の一端部の先端部を、
他端部側に向けて屈曲する係合部となし、このレバー部
材を前記工具本体の前記チップ着座部の下方に、その前
記一端部を前記スローアウェイチップの前記貫通孔に挿
通させて前記係合部を該スローアウェイチップに係合さ
せ、その前記他端部を前記側壁側を指向させるととも
に、その角部の一部が前記工具本体に形成された摩擦面
に当接する状態で配設し、このレバー部材の下部に、該
レバー部材の前記角部近傍を略前記法線方向に付勢する
弾性部材を設け、 さらに、前記工具本体に前記レバー部材の前記他端部を
略前記法線方向に向けて押圧する押圧部材を設けたこと
を特徴とするスローアウェイ式切削工具。1. A state in which a throw-away tip in which a through hole extending in the thickness direction is formed in a chip seating portion provided in a tool body makes the thickness direction parallel to a normal direction of the chip seating portion. In the throw away type cutting tool, the side wall formed on the tip seating portion of the tool body serves as a positioning surface for contacting the side surface of the throw away tip, and is a lever member having a substantially L shape in a side view. The tip of one end of
The lever member is an engaging portion that bends toward the other end, and the lever member is inserted below the tip seating portion of the tool body, and the one end thereof is inserted into the through hole of the throw-away tip. The mating portion is engaged with the throw-away tip, the other end thereof is directed toward the side wall, and the corner portion is disposed so as to abut on a friction surface formed on the tool body. An elastic member for urging the vicinity of the corner of the lever member in the direction of the normal line in the lower portion of the lever member; A throw-away type cutting tool provided with a pressing member that presses in a direction.
につれて漸次前記側壁側に傾斜する傾斜面に形成された
ことを特徴とする請求項１記載のスローアウェイ式切削
工具。2. The indexable cutting tool according to claim 1, wherein the friction surface is formed as an inclined surface that gradually inclines toward the side wall as it goes inward in the normal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4299092U JPH065806U (en) | 1992-06-22 | 1992-06-22 | Indexable cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4299092U JPH065806U (en) | 1992-06-22 | 1992-06-22 | Indexable cutting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH065806U true JPH065806U (en) | 1994-01-25 |
Family
ID=12651473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4299092U Withdrawn JPH065806U (en) | 1992-06-22 | 1992-06-22 | Indexable cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065806U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004148496A (en) * | 2002-10-28 | 2004-05-27 | Kennametal Inc | Tool holder, and device for fastening insert in tool holder |
| WO2012161176A1 (en) * | 2011-05-23 | 2012-11-29 | 株式会社タンガロイ | Cutting insert, clamp device for cutting insert, and cutting tool |
| JP2015139839A (en) * | 2014-01-28 | 2015-08-03 | 住友電工ハードメタル株式会社 | cutting tool |
-
1992
- 1992-06-22 JP JP4299092U patent/JPH065806U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004148496A (en) * | 2002-10-28 | 2004-05-27 | Kennametal Inc | Tool holder, and device for fastening insert in tool holder |
| WO2012161176A1 (en) * | 2011-05-23 | 2012-11-29 | 株式会社タンガロイ | Cutting insert, clamp device for cutting insert, and cutting tool |
| JP2015139839A (en) * | 2014-01-28 | 2015-08-03 | 住友電工ハードメタル株式会社 | cutting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19961003 |